On Sun, 17 Mar 2013, David C. Ullrich wrote: > On Sun, 17 Mar 2013 05:25:57 -0700 (PDT), firstname.lastname@example.org wrote:
> >Maths texts and lectures often refer to observations as being "easy to check", "trivial" or "obvious." It would seem to me that such phrases (at least sometimes) risk the consequence that students will find difficulty in checking such "easy" results, have their confidence thereby undermined and thereby have their mathematical education impaired. I'm asking in this post whether this is a concern. Perhaps the answer is different depending on the level of the students, and my guess is that this concern is more valid for undergraduates. (I would doubt that it would bother a well-known elite mathematician if he or she struggled to verify a fact that the seminar speaker insisted was "obvious.")
> Do you have any reason to think the answers are going to be different > from the last time you asked this question?